Biometrics: Hook up support for halHandlesDisplayTouches prop

Fingerprint AIDL interface supports boolean type sensor prop
halHandlesDisplayTouches, that defines whether the HAL is responsible
for detecting and processing of display touches [1].

If the value is false, the framework was supposed to be responsible for
handling the display touch events and passing them down to the HAL by
using ISession#onPointerDown and ISession#onPointerUp. If the value is
true, the framework was not supposed to notify the HAL about touch
events.

Currently, Android framework is not aware of this prop, so hook it up
for the expected outcome.

[1] https://cs.android.com/android/platform/superproject/main/+/main:hardware/interfaces/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/SensorProps.aidl?q=halHandlesDisplayTouches

Test: Build and verify no regression authenticating or registering
fingerprints with udfps AIDL HAL.
Change-Id: I56166950c6ef7cbb0c4ac2c0b7998e4a909d4af9